<template>
  <el-form label-width="100px">
      <el-form-item label="SPU名称">
          <el-input placeholder="请你输入SPU名称" v-model="SpuParams.spuName"></el-input>
      </el-form-item>
      <el-form-item label="SPU品牌">
          <el-select v-model="SpuParams.tmId">
              <el-option v-for="(item, index) in  AllTradeMark" :key="item.id" :label="item.tmName"
                  :value="item.id"></el-option>
          </el-select>
      </el-form-item>
      <el-form-item label="SPU描述">
          <el-input type="textarea" placeholder="请你输入SPU描述" v-model="SpuParams.description"></el-input>
      </el-form-item>
      <el-form-item label="SPU图片">
          <!-- v-model:fileList->展示默认图片 
               action:上传图片的接口地址
               list-type:文件列表的类型
          -->
          <el-upload v-model:file-list="imgList" action="/api/admin/product/fileUpload" list-type="picture-card"
              :on-preview="handlePictureCardPreview" :on-remove="handleRemove" :before-upload="handlerUpload">
              <el-icon>
                  <Plus />
              </el-icon>
          </el-upload>
          <el-dialog v-model="dialogVisible">
              <img w-full :src="dialogImageUrl" alt="Preview Image" style="width:100%;height: 100%;" />
          </el-dialog>
      </el-form-item>
      <el-form-item label="SPU销售属性">
          <!-- 展示销售属性的下拉菜单 -->
          <el-select v-model="saleAttrIdAndValueName" style="width: 700px;"
              :placeholder="unSelectSaleAttr.length ? `还未选择${unSelectSaleAttr.length}个` : '无'">
              <!-- :value="`${item.id}:${item.name}`收集起来将来带给服务器 -->
              <el-option :value="`${item.id}:${item.name}`" v-for="(item, index) in unSelectSaleAttr" :key="item.id"
                  :label="item.name"></el-option>
          </el-select>

          <el-button @click="addSaleAttr"  :disabled="saleAttrIdAndValueName ? false : true"  style="margin-left:10px" type="primary" size="default" icon="Plus">添加属性</el-button>
          <!-- table展示销售属性与属性值的地方 -->
          <el-table border style="margin:10px 0px" :data="saleAttr">
              <el-table-column label="序号" type="index" align="center" width="80px"></el-table-column>
              <el-table-column label="销售属性名字" width="120px" prop="saleAttrName"></el-table-column>
              <el-table-column label="销售属性值">
                  <!-- row:即为当前SPU已有的销售属性对象 -->
                  <template #="{ row, $index }">
                      <el-tag style="margin:0px 5px" @close="row.spuSaleAttrValueList.splice(index, 1)"
                          v-for="(item, index) in row.spuSaleAttrValueList" :key="row.id" class="mx-1" closable>
                          {{ item.saleAttrValueName }}
                      </el-tag>
                      <el-input @blur="toLook(row)" v-model="row.saleAttrValue" v-if="row.flag == true"
                          placeholder="请你输入属性值" size="small" style="width:100px"></el-input>
                      <el-button @click="toEdit(row)" v-else type="primary" size="small" icon="Plus"></el-button>
                  </template>
              </el-table-column>
              <el-table-column label="操作" width="120px">
                  <template #="{ row, $index }">
                      <el-button type="primary" size="small" icon="Delete"
                          @click="saleAttr.splice($index, 1)"></el-button>
                  </template>
              </el-table-column>
          </el-table>
      </el-form-item>
      <el-form-item>
          <el-button :disabled="saleAttr.length > 0 ? false : true" type="primary" size="default"  @click="save">保存</el-button>
          <el-button type="primary" size="default" @click="cancel">取消</el-button>
      </el-form-item>
  </el-form>
</template>

<script setup lang="ts">
import type { SpuData } from '@/api/product/spu/type'
import { ref, computed } from 'vue';
import { reqAllTradeMark, reqSpuImageList, reqSpuSaleAttr, reqAllSaleAttr, reqAddOrUpdateSpu } from '@/api/product/spu'
import type { SaleAttrValue, HasSaleAttr, SaleAttr, SpuImg, Trademark, AllTradeMark, SpuHasImg, SaleAttrResponseData, HasSaleAttrResponseData } from '@/api/product/spu/type';
import { ElMessage } from 'element-plus';
let $emit = defineEmits(['changeScene']);
//点击取消按钮:通知父组件切换场景为1,展示有的SPU的数据  params:'update'的意思是点击取消留在当前页
const cancel = () => {
  $emit('changeScene',{flag:0,params:'update'});
}
//存储已有的SPU这些数据
let AllTradeMark = ref<Trademark[]>([]);
//商品图片
let imgList = ref<SpuImg[]>([]);
//已有的SPU销售属性
let saleAttr = ref<SaleAttr[]>([]);
//全部销售属性
let allSaleAttr = ref<HasSaleAttr[]>([]);
//控制对话框的显示与隐藏
let dialogVisible = ref<boolean>(false);
//存储预览图片地址
let dialogImageUrl = ref<string>('')
//存储已有的SPU对象
let SpuParams = ref<SpuData>({
  category3Id: "",//收集三级分类的ID
  spuName: "",//SPU的名字
  description: "",//SPU的描述
  tmId: '',//品牌的ID
  spuImageList: [],
  spuSaleAttrList: [],
});
//将来收集还未选择的销售属性的ID与属性值的名字
let saleAttrIdAndValueName = ref<string>('')
//子组件书写一个方法
const initHasSpuData = async (spu: SpuData) => {
  //存储已有的SPU对象,将来在模板中展示
  SpuParams.value = spu;
  //spu:即为父组件传递过来的已有的SPU对象[不完整]
  //获取全部品牌的数据
  let result: AllTradeMark = await reqAllTradeMark();
  //获取某一个品牌旗下全部售卖商品的图片
  let result1: SpuHasImg = await reqSpuImageList((spu.id as number));
  //获取已有的SPU销售属性的数据
  let result2: SaleAttrResponseData = await reqSpuSaleAttr((spu.id as number));
  //获取整个项目全部SPU的销售属性
  let result3: HasSaleAttrResponseData = await reqAllSaleAttr();
  //存储全部品牌的数据
  AllTradeMark.value = result.data;
  //SPU对应商品图片
  imgList.value = result1.data.map(item => {
      return {
          name: item.imgName,
          url: item.imgUrl
      }
  })
  //存储已有的SPU的销售属性
  saleAttr.value = result2.data;
  //存储全部的销售属性
  allSaleAttr.value = result3.data;
}
//照片墙点击预览按钮的时候触发的钩子
const handlePictureCardPreview = (file: any) => {
  dialogImageUrl.value = file.url;
  //对话框弹出来
  dialogVisible.value = true;
}
//照片墙删除文件钩子
const handleRemove = () => {
  console.log(123);
}
//照片钱上传成功之前的钩子约束文件的大小与类型
const handlerUpload = (file: any) => {
  if (file.type == 'image/png' || file.type == 'image/jpeg' || file.type == 'image/gif') {
      if (file.size / 1024 / 1024 < 3) {
          return true;
      } else {
          ElMessage({
              type: 'error',
              message: '上传文件务必小于3M'
          })
          return false;
      }
  } else {
      ElMessage({
          type: 'error',
          message: '上传文件务必PNG|JPG|GIF'
      })
      return false;
  }
}

//计算出当前SPU还未拥有的销售属性  在所有的销售属性中过滤出每一个和已有的销售属性不一样的
let unSelectSaleAttr = computed(() => {
  //全部销售属性:颜色、版本、尺码
  //已有的销售属性:颜色、版本   return true
  let unSelectArr = allSaleAttr.value.filter(item => {
      return saleAttr.value.every(item1 => {
          return item.name != item1.saleAttrName;
      });
  })
  return unSelectArr;
})



//添加销售属性的方法
const addSaleAttr = () => {
  /*
  必须是这个格式push到数组里
  "baseSaleAttrId": number,
  "saleAttrName": string,
  "spuSaleAttrValueList": SpuSaleAttrValueList
  */
//   aleAttrIdAndValueName是字符串 1:a  切割成数组   解构
  const [baseSaleAttrId, saleAttrName] = saleAttrIdAndValueName.value.split(':');
  //准备一个新的销售属性对象:将来带给服务器即可
  let newSaleAttr: any = {
      baseSaleAttrId,
      saleAttrName,
      spuSaleAttrValueList: []
  }
  //追加到数组当中
  saleAttr.value.push(newSaleAttr);
  //清空收集的数据
  saleAttrIdAndValueName.value = '';

}

//属性值按钮的点击事件
const toEdit = (row: SaleAttr) => {
  //点击按钮的时候,input组件不就不出来->编辑模式
  row.flag = true;
//   追加一个销售属性值用来收集数据将来给服务器  v-model
  row.saleAttrValue = ''
}
//表单元素失却焦点的事件回调
const toLook = (row: SaleAttr) => {
    // console.log(row)
  //整理收集的属性的ID与属性值的名字   解构
  const { baseSaleAttrId, saleAttrValue } = row;
  //整理成服务器需要的属性值形式
  let newSaleAttrValue: SaleAttrValue = {
      baseSaleAttrId,
      saleAttrValueName: (saleAttrValue as string)
  }

  //非法情况判断
  if ((saleAttrValue as string).trim() == '') {
      ElMessage({
          type: 'error',
          message: '属性值不能为空的'
      })
      return;
  }
  //判断属性值是否在数组当中存在
  let repeat = row.spuSaleAttrValueList.find(item => {
      return item.saleAttrValueName == saleAttrValue;
  })

  if (repeat) {
      ElMessage({
          type: 'error',
          message: '属性值重复'
      })
      return;//后面的语句不执行了
  }


  //追加新的属性值对象
  row.spuSaleAttrValueList.push(newSaleAttrValue);
  //切换为查看模式   button出现
  row.flag = false;
}

//保存按钮的回调
const save = async () => {
  //整理参数
  //发请求:添加SPU|更新已有的SPU
  //成功
  //失败
  //1:照片墙的数据
  SpuParams.value.spuImageList = imgList.value.map((item: any) => {
      return {
          imgName: item.name,//图片的名字
          imgUrl: (item.response && item.response.data) || item.url
      }
  });
  //2:整理销售属性的数据
  SpuParams.value.spuSaleAttrList = saleAttr.value;
  let result = await reqAddOrUpdateSpu(SpuParams.value);
  if (result.code == 200) {
      ElMessage({
          type: 'success',
          message: SpuParams.value.id ? '更新成功' : '添加成功'
      })
      //通知父组件切换场景为0
      $emit('changeScene',{flag:0,params:SpuParams.value.id?'update':'add'});
  } else {
      ElMessage({
          type: 'success',
          message: SpuParams.value.id ? '更新成功' : '添加成功'
      })
  }


}

//添加一个新的SPU初始化请求方法
const initAddSpu = async (c3Id: number | string) => {
  //清空数据
  Object.assign(SpuParams.value, {
      category3Id: "",//收集三级分类的ID
      spuName: "",//SPU的名字
      description: "",//SPU的描述
      tmId: '',//品牌的ID
      spuImageList: [],
      spuSaleAttrList: [],
  });
  //清空照片
  imgList.value = [];
  //清空销售属性
  saleAttr.value = [];
  saleAttrIdAndValueName.value  = '';
  //存储三级分类的ID  有c3Id才能添加成功  c3Id是父组件传过来的
  SpuParams.value.category3Id = c3Id;
  //获取全部品牌的数据
  let result: AllTradeMark = await reqAllTradeMark();
  let result1: HasSaleAttrResponseData = await reqAllSaleAttr();
  //存储数据
  AllTradeMark.value = result.data;
  allSaleAttr.value = result1.data;
}
//对外暴露
defineExpose({ initHasSpuData, initAddSpu })
</script>

<style scoped></style>
